山东大学学报(医学版) ›› 2016, Vol. 54 ›› Issue (11): 19-23.doi: 10.6040/j.issn.1671-7554.0.2015.1067
董晓婧1,李静1,赵蕾2,齐眉1,孙泽雨1,王红1,赵蔚明1
DONG Xiaojing1, LI Jing1, ZHAO Lei2, QI Mei1, SUN Zeyu1, WANG Hong1, ZHAO Weiming1
摘要: 目的 探究小鼠衣原体(Chlamydia)肺部感染中自然杀伤(NK)细胞对白细胞介素-22(IL-22)产生及疾病进程的影响。 方法 36只小鼠分为实验组和对照组,每组18只。实验组小鼠尾静脉注射anti-asialo GM1,以封闭体内NK细胞,同时鼻吸入含鼠衣原体(Chlamydia muridarum)的感染液;对照组小鼠尾静脉注射同型对照抗体,感染方法同实验组。每天记录小鼠体质量变化;分别于感染后6、12 d,检测小鼠肺部衣原体包涵体形成单位(IFU);实时荧光定量PCR、ELISA方法检测小鼠脾脏中IL-22的表达,细胞内细胞因子染色技术检测小鼠脾脏Th17细胞数量变化。 结果 与对照组相比,实验组小鼠肺部感染加重,体质量降低趋势加大、肺部IFU增加(P<0.05),脾脏中IL-22的mRNA和蛋白表达水平减少(P<0.05),且Th17细胞的百分比和绝对数量均降低(P<0.01)。 结论 NK细胞封闭导致小鼠体内IL-22的表达降低、肺部感染加重,提示NK细胞与IL-22的表达存在相关性;NK细胞可通过促进IL-22的产生,从而增强机体抗衣原体感染的能力。
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